Clinching machine



Oct. 3, 1933. J. H. M EVOY, JR, ET AL 1,928,653

CLINCHING MACHINE Filed July 23, 1931 2 Sheets-Sheet 1 b( lav newton;

J'asEPn H. M Evov R w v 6? A attouwqa Patented Oct. 3, 1933 l y The invention relatesto Lani-improvement in I [cl inching machines particularly of ,,the.jtype used in displacin materialin order to retain an arti cle in position in a larger body. 1 I

.Itis one of the objects of the invention vide a clinching machine which is adaptedto de press a small article in a larger cavity and then displace a portion of the materialabout-the cav ity in order. to retain thesmaller article in position. 7

Another a clinching machine in which the clinching op eration is performed by a combined spinningand hammering movement.

Another object of the invention is to provide a riveting hammer which is adapted to. be rotatedwhil'e the hammering movement is being pe o ed A still further, object of the invention is to providea spindle for retaining the inserted article in position v while a co-axial hammeris used to displace the material toclinchsuch-article in position. I A still further object of the invention is to providea clinchingmachine in which thearticle being operated on may be rotatedato cause longitudinal movement upcnrotation thereof so that by merely rotating the. body agseries' oi cavities will be constantly placed iii-alignment with the clinching hammer. 1 ther and further objects of theinvention will be readily apparent to those skilled in the art when thelfollowin g description is' consid'ered in connection with the accompanying drawings, wherein: 1 k

Fig. 1 isa side elevation of a machine embodying the invention with a piece of pipein position to have strainer buttons clinched thereini Fig. 2 is asectional View showing thearrangement of thehammer-and the anvil which is used to operate the same. l

l Fig.3 is a top plan view-of a strainer button which has been clinched in position'in a pipe with the machine disclosediifl a a i Fig. 4 is a sectionalview of the pipe withla strainer button clinched-in position.

, Fig. 5. is a detailed view of a ,modifiedform of the invention in which a fluid'operated hammeris Fig. 6 is the front or the elevation tit e device shown in Fig. Ewith certain of the parts shown in section and taken on the line 6-6 of Fig. 5. I Fig. ,7 shows an elevation of a' piece of pipe whichhas been filled with strainer buttons.

@Tnthe production of astrainer pipe which is to pro object of the invention to provide pipe to-which the buttons have been, fitted'and' particularly shows the helical arrangement of the buttons with respectto the body. This heliwells, it isdesirableito manufacture small plugs whichj is to serveas a body .or support for these; buttons, and'the buttons arethen' insertedinthese cavities and clinchedfin position. These buttons have been clinched imposition by: hand and with rivetingmachines, but the machine disclosed in the present applicationhas been found to be of material advantage in that it greatlyiacilitates the clinching operation and insures proper positioning of the strainer button as well attachment to the strainer pipe.

Fig. '7 shows an elevationoi a pieceof strainer,

cal arrangement is of advantage in that in forming theopenings in thepipe to receive the buttons and also in the operationof'insertingthe buttons the pipe "may be rotatedupon inclined supports 7 so that it will travel longitudinally and the oper 'ation may be carried onbontinuously by merely rotating the pipe, on -its supports so that it will.

travellongitudinally. The supports are indicated.

particularly adaptedfor usein .oil and Water or strainers which have long been designated'as,v strainer buttons. Cavities-areformed in the pipe as its secure the brackets 9 and rollers'lO. *Thisplate 8 may I be anchored by a holder--11 and the bracket '9 is preferably adjustable with respect to the plate by means of a bolt 12. With this structure it is possibleto change the inclination of the axis of the rollers 10 with respect totheaxisof the-pipe; l3

which is supported on the rollers. By inclining these'rollers by rotation ofthe bracket 9' the amount of travel of the pipe .13 when itis rotated on the rollers may beadjusted. Devices of this type are believed to-be well known inthe art and are explained'here in order thatthe movement of the. pipe with regard to the clinching machine will be understood,-as this; is an impor-e tant part of themachine. in the operation thereon. V

The machine embodiesa-clinching head indi cated 'generally'at 15. This head is mounted upona frame .16 which is adjustable ,With respect to the face 17 of theportion 2. J Any suitable dehead 15 but the present structureembodies an order to speed up 10.5

.adapted to reciprocate. 40

arm 18 which is pivoted on a bolt 19 in the portion 2. This arm 18 may be connected with a bar 20 which has a plurality of openings 21 therein to accommodate connection of the bar 18 at a plurality of positions. The location of this connection between the bar and arm governs the amount of travel of the head 15. The bar 20 is in turn connected with the lever 22 which also has a plurality of openings to permit adjustment. This lever 22 is pivoted on the bolt 23 carried by the body of the machine and is provided with a contactmember 24 which is adapted to be depressed by the foot of the operator. Thus, when it is desired to use the machine the operator will place his foot upon the levern22 and move it downwardly so that the linkage arrangement will also cause downward movement of the clinching head 15.

The clinching head which constitutes one of.

the novel features of the invention may be made up in several forms and for purposes of illustration we have shown a head which embodies a power unit or motor ofsome type which is adapted to operate as a hammer. Fig. 1 shows an 'electrically drivenhammer which includes a housing 26 which is attached to the frame 16 by means of a band 2'7. A head 28 on the hammer is adapted to be reciprocated by the operation of a solenoid or armature, which is contained within the housing 26. It is merely intended to obtain a rapid vibration of this head 28 in order to provide a hammering effect upon the anvil 29.

This anvil is shown in section in Fig. 2 and is constructed so that it may be supported within but arranged so that'it may have a reciprocating motion with respectto the holder 36. This holder 30 is mounted-on the frame v16 but is provided with an opening 31 in which the anvil 29 is The anvil is provided with a passage 32 which receives a support rod 33 which rests in the openings 34 in the holder 30. This rod extends transversely through the anvil 29 and rests in the holder 30. Set screws'35 may be used to limit the movement of this rod 33. The anvil 29 has inserted therein a bushing 37 which projects slightly over the anvil and is arranged to contact with a die 38 which is adapted to rest on the surface 39 of the pipe 13.

Thus, reciprocating movement of the anvil 29 causes a similar movement of the bushing 37 3 it will displace the material contacted on the pipe and move it to clinch the strainer button in position. 4

In order that the strainer button will be positioned properly in the pipe, it must be pressed into the cavity. Fig. 4 shows a section of the pipe 13 wherein the strainer button 42 has been moved into the cavity 43 where it may be clinched in position. The strainer button 42 may be tapered to fit in the cavity 43 or the cavity may be provided with a shoulder restas 44 in order to receive the button. To move the button'into proper positiona ram 45 has been provided, which ram-is supported on the 'cross rods 33. This ram or spindle extends downwardly inside'of the bushing- 37 and the die 38 and is movable longitudinally with respect to both the bushing and the die. When it is desired to operate the machine the pipe 13 is rotated to such a position that the cavity 43 is directly beneath the spindle 45. The button 42 is then placed in position and the operator then depresses the portion 24 of the lever 22. This, in turn, lowers the head 15, the holder 30 and the spindle 45.

By proper adjustment of the set screws the spindle will be moved downwardly so that the button 42 will be forced into the cavity 43 to fit in the taper of the cavity or against the shoulder 44. As long as the lever is depressed at 24 the spindle 45 will hold the button in position. The motor contained in the housing 26 may now be turned on so that the head 28 will vibrate and cause vibration of the bushing 37 and the die 38. This vibration displaces the material about the periphery of the button 42 on the surface 39 of the pipe so that a portion such as 47 will be moved to overlie the upper edge 48 of the strainer button. The strainer buttons may be provided with a groove 49 so that the material 47 will be flowed to overlie the button.

It has been found in the operation of the machine that a much better clinching operation may be obtained if the die 38 is rotated while it is being vibrated to cause the riveting action. To accomplish this rotation or spinning, a motor 51 has been provided which is arranged to cause rotation of a drive wheel 52 by means of a belt 53. I I

'Fig. 2 shows a sectional view of the wheel 52 and a key 54 which engages the die 38. In this manner the die 38 will be compelled to rotate with the wheel 52 and may be free for vertical movement or reciprocation with respect thereto. The wheel 52 is supported on the bracket 55 which extends from the frame 16.

The control of the device may be so correlated that the motor in the housing 26 and the motor 51 will be turned on and off simultaneously so that the hammering and spinning action will be accomplished at the same time and the material 47 in this manner will be displaced much more uniformly and will be deposited in a proper position about the button 42. so that it will be positively retained and firmly anchored in the strainerpipe. The cut away portion 41 on the die 38 when rotated during the hammering operation carries with it small portions of material which will be deposited in different positions about the face of the button, and the hammering action is greatly facilitated by having the cut away portions on the contacting surface of the die. It is to be understood, however, that this die 38 may be formed in any desired manner in order to accomplish the proper displacement of the material of the pipe so that it will securely retain the strainer button in position.

Figs. 5 and 6 show a modified form of hammer-head and spinner construction which utilizes a fluid driven hammer indicated generally at 60. This hammer is driven by a flow of compressed fluid, flowing through a line 61 and may be of any construction which is now well known in the art. This hammer is arranged to reciprocate a head 62 which contacts an anvil 63. Control of the hammer 60 is accomplished by means of the handle 64 which may be used to open or close the valve 65 in the line 61. The anvil 63 is of somewhat'difierent construction than the anvil 29 previously described, and has a yoke construction such as 66 so that an opening 67 is provided in the central part thereof.

y Leashes The anvil 63 extends downwardly and is formed with a socket68 which receives a die 69which is the equivalent of the die 38 shown in Fig. 2.

This die 69 is arranged to be driven by the wheel 52 as previously described.

The spindle in the constructionshown in Figs. 5 and 6 is modified in that it is supported in the crosshead 70 andhas been shown as threaded thereto so that it may be adjusted vertically to depress the button 42 any desiredamount. Y By adjustment of the threaded connection between the spindle andthe cross headthe lower end 71 may be adjusted as to its maximum downward movement. A locking pin 72 is shown as passing through the cross head 70 so thatfthe spindle 45 may be locked at any desired elevation. Acavity '73 is formed in the anvil'63 so that the spindle and anvil will be aligned at all times, and the upper; end '74 of the spindle will pass into this cavity 73. The cross head '70 is retained in p0,-

sition on thebracket 16 by means of'bolts or other fastening device 75. 3

' The operation of the machine seems'to be readily apparent and-when it is desired to move thestrainerbutton into position and to hammer and spinthe material adjacent theedges thereof into a position such that it will clinch the button securely in position theentirej operation may be carried on simultaneously. Hovvever, either the hammering or the spinning .as well as the inser tion of the button may be carried on as separate operations and the machine used-for any one of rosive material.

i the three operations independently of the others.

After the button has been clinched in the pipe it will have theappearance shown in Fig. 3 wherein a groove 77 will remain. A. considerable amount of material, however, hasbeen displaced to overlie the edge of thestrainerbutton and hold it in position forthe reason that such buttons and strainer pipe are subjected to extensive corsecurely'anchored in the pipe and cannot readily be displaced and so that a considerable quantity of material will be presentjto resist both corro- .sion and abrasion. j p I k 1 Having described the invention what we claim l. A clinching machinecadapted to secure strainer buttons in a" pipe and including a movable head, means to depress said head, means to facilitate the clinching operation.

on said head to spin thematerial of said pipe about'the periphery ofsaid strainer button.

2.-A' clinching machine) adapted for use in clinching strainer buttons in well screen pipe including means to force the strainer button into move the strainer button into position and means the openingin the pipe including a spindle to pro- I te'ct the face ofthe strainer button, means to hammer the metal of the pipe about the edge of the'button, andmeans" to spin saidhammering means...

the article to beclinched, a die concentrically disposed around said spindle to displace metal about the article so thatit will overlie the article,-

3; In al'clinching 'machine, a spindle to position,

and means to hammer and rotate said die to 4. Arnachine of the character described including an adjustable support stand, adjustable rollers thereon to support a pipe, a head on said machine, means to depress said head and force a strainer button into position, a vibrating spin ningidie carried by said head and adapted to clinch a'strainer'button Iihthe pipe while the button is being held by said means.

moved by said anvil, independent means to rotate said die, and a spindle projecting from the center of said diezand adapted to remain sta- I tionary. v i V I 6. A head for clinching machines, means to depress'said head, a die supported bysaid head,

means to rotate said die, means to hammer said die, and a spindle in said die adapted to be held stationary during the hammering and'spinning of said die. i

7'. A head for clinching machines, means to depress said head, a die supported bytsaid head, means to rotate said die, means to hammer said die, a spindle in said die adapted to be held stationary during the hammering andspinning of said die, and means to adjust the position of said 1 spindle with respect to said die. I

'8. A machine for clinching strainerbuttons in well screen pipe including means to support the pipe so that it will move longitudinally of said machine upon rotation, a clinching head, means to move said head downwardly to clinching position, and means to perform the clinching inthe pipe, and a die to spin and hammer the metal of the pipe which is closely adjacent the strainer button so that said button will be engaged thereby and clinched in position.

RICHARD (J. WOODWARD. JOSEPH H. McEvorJR. EDWIN A. JOHNSON.

cluding a spindle to hold the strainer button in l 1 00" 5. A head for clinching machinesincluding'a f reciprocating hammer, an anvil adapted to "be. struckby said hammer, a die adapted. to be 

